A major client from Guangdong placed an order for 75 pieces of high-toughness LG mold steel with me, and I’m very pleased.
Seeing the 75 pieces of high-toughness LG mold steel ready for shipment in the workshop—40 pieces of LG premium material for mold cores and 35 pieces of round bar for insert cores—really put me in a great mood.
He’s a client who makes glass-fiber-reinforced molds, and this time he needs to produce a total of 8–9 sets of molds. Previously, the customer didn’t have such high requirements; they typically used H13 and S136 for hard molds, quenched and tempered to 50 HRC. However, this time the customer made a special request: the mold must achieve a service life of 3 million cycles. Additionally, the molds feature narrow flanges and small bosses, so the mold design places high demands on the steel’s wear resistance and resistance to chipping.
He realized that the materials he had been using were inadequate, so he contacted me a month ago. After several discussions, we ultimately decided to use high-toughness LG mold steel.
Originally, he had planned to use high-hardness DC53 to ensure high wear resistance. However, I noticed that the product’s bosses were only 1–2 mm wide and relatively tall. Using DC53 for such narrow-edged bosses would likely result in chipping, so I recommended the high-toughness LG mold steel instead.
Since LG has 8–9 times the toughness of DC53 and a hardness of 54–58 HRC, it’s so tough that it won’t break even if you bend it with a hammer. LG excels at molds that require both toughness and wear resistance, especially those with high glass fiber content.
I remember when their CEO visited my factory last month; it was pouring rain that day. As the people of Guangdong say, “Rain means water, and water means wealth.” I never expected that just half a month later, he would place an order for 75 pieces of high-toughness LG mold steel with me. I’m going to record a video to document this.
If your high-glass-fiber-content mold features narrow flanges, has exceptionally high toughness requirements, and needs a service life exceeding 1 million cycles, then I recommend using high-toughness LG mold steel. Its toughness is 8–9 times that of DC53, with a hardness of 54–58 HRC—it’s so tough that you can bend it with a hammer without it breaking. The high hardness ensures wear resistance, preventing the mold from being worn down and eliminating flash on the product, while the high toughness ensures that even under harsh conditions with narrow flanges, the mold won’t chip or crack. LG mold steel offers both high hardness and high strength, making it a highly suitable choice.
I’m Wu Dejian, the “King of Mold Steel,” from Dongguan Yuhui Mold Steel. Yuhui Mold Steel is used by three Fortune 500 companies, and Kyocera has been sourcing from us for seven consecutive years. If you’re unsure about which mold steel to choose, or if the mold steel you’re currently using results in short mold lifespans and you don’t know which grade to switch to, come talk to me. I’ve helped over 4,000 companies solve complex challenges related to mold material selection, manufacturing, and usage. I’m confident that when it comes to selecting and applying mold steel, I can serve as your chief advisor and help you avoid costly trial-and-error.
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Wu Dejian’s tool steel, the chief of staff of the user, bought everything he had used.